Protective wrapping sheet



June 27, 1933. HALL. JR 1,915,416

' PROTECTIVE WRAPPING SHEET Filed Aug. 16, 1930 mumuluu| uul'u II' 'I'Il'lln" "4 By fimaolizm Attorney Patented. June 27, 1933 warren STATES EDGAR A. HALL, JR., MUSKEGON, MICHIGAN EROTECTIVE WRAPPING SHEET Application filed August 16, 1930; Serial No. 475,757.

This invention relates to wrapping materials for packing, lining or insulating paper to protect against heat and cold and an object of the invention is to provide a laminated wrapping sheet, one of the plies of which are embossed or waved to perform the twofold purpose of protecting fragile articles wrapped thereln, and also to utilize the corrugations as pockets to receive excess 0 waterproof adhesive material to insure a continuous film of water-proof material between the two plies.

Another feature of the invention is to provide a laminated sheet for wrapping purposes that has a reinforcing rib extending between the corrugations to form a rein forcement for preventing the sheet from being easily torn.

With the foregoing and other objects in view, the invention consists of a novel combination and construction as will be hereinafter more specifically described and illustrated in the accompanying drawing, but it is to be understood that changes, variations and modifications may be resorted to without departing from the spirit of the invention and claim hereto appended. J

In the drawing wherein like reference characters denote corresponding parts throughout the several views Figure 1 is a fragmentary top plan view of the top or embossed layer of material,

Fig. 2 is a vertical section View through the sheet assembled in accordance with the present invention,

Fig. 3 is a sectional view taken substantially on the line 33 of Fig. 1,

. Fig. 4: is a sectional view taken substantially on the line 4-4: of Fig. 1, and

Fig. 5 is a sectional view taken substantially on the line 55 of Fig. 1.

Referring to the drawing in detail, 6 indicates generally a portion of the wrapping sheet in accordance with the present inven tion. These sheets may be made up into any desired size or may be formed into rolls to facilitate their use in wrapping articles.

The sheet consists of a relatively heavy sheet of embossed or waved paper or cardboard A and a relatively light smooth sheet sheets.

of paper B disposed under the embossed or waved sheet. The two sheets are anchored to each other by a continuous waterproof adhesive layer G, which is preferably formed of a bituminous base like asphalt, rendered fluid to the desired plasticity by any of the well known solvents. The adhesive layer C is interposed between the confronting faces of the The sheet A is embossed in a geometric pattern and with high and low points running in various directions.

The embossed or waved sheet A is made with rows'of square impressions e, f, preferably extending longitudinally of the sheet. The alternate impressions on each row 6, f, are inverted with respect to the intermediate impressions to form an inverted pocket 7, to provide pockets 7 for excessive amounts of adhesive 0 so as to'insure proper anchorage between the embossed and smooth sheet.

Between the rows of retiform impressions there is provided a rib 8 which is about the same width as the dimensions of the corrugations and this rib extends longitudinally of the sheet to provide reinforcement to pre- Vent the finished product from being easily torn. The rib 8 is disposed in a plane midway between the outer and inner faces of the impressions, and spaces the rows of impressions from each other.

The inner face of the layer A is coated with the waterproof layer C and then the smooth layer B is pressed lightly against the adhesive layer until the adhesive is uniformly attached to the layers. In the assembled relation there is formed a wrapping sheet having impressions to prevent breaking of articles wrapped therein and also a relatively thick waterproof coating between the plies of paper to protect perishable articles.

It is to be understood that by describing in detail herein any particular form, structure, or arrangement, it is not intended to limit the invention beyond the terms of the claim or the requirements of the prior art. 95

Having thus described my invention, what I claim as new is A sheet for packing, lining or insulating purposes comprising a sheet of paper or the like having both faces smooth, a second sheet 109 of paper or the like provided with indentations on both faces of the central plane thereof and fully covering the sheet, said indentations being small, with the indentations on one face forming small depressions on the opposite face and a layer of adhesive material between the two sheets spacing the two sheets apart and extending over the entire-surfaces of the adjacent faces of the two sheets, said adhesive material filling all of the indentations on the inner face of the indented sheet.

In testimony whereof I affix my signature.

EDGAR A. HALL, J1; 

